喷油嘴喷孔内流与喷雾特性试验研究  

Experimental Research on Flow and Spray Characteristics of Nozzle

作　　者：李海洋[1] 钟博[1] 杨海涛[1] 陈大陆[1] 许汉君[1] 郭立新[1] 耿培林[2] ZHONG Bo;YANG Haitao;CHEN Dalu;XU Hanjun;GUO Lixin;GENG Peilin(FAW Wuxi Fuel Injection Equipment Research Institute,Wuxi 214063,China;State Key Laboratory of Engines,Tianjin 300072,China)

机构地区：[1]中国一汽无锡油泵油嘴研究所,江苏无锡214063 [2]天津大学内燃机国家重点实验室,天津300072

出　　处：《现代车用动力》2018年第3期43-48,共6页Modern Vehicle Power

摘　　要：基于比例放大透明喷油嘴、高速摄影和相位多普勒粒子分析仪(PDPA)研究了组孔式喷油嘴内流与喷雾特性,试验结果表明:随着喷射压力的增大,喷孔空穴现象明显增强;组孔式喷油嘴较传统喷油嘴空穴面积增大。组孔式喷油嘴较传统喷油嘴的喷雾贯穿距更大,喷雾锥角更大,喷雾扩散能力更强,有助于燃油的扩散和雾化;组孔间距增大,喷雾粒径减小。通过对组孔式喷油嘴进行试验研究,为高性能共轨喷油嘴的设计开发提供参考依据。In order to study the influence of the group-hole nozzle to inflow and spray characteristics,the proportional amplifier transparent nozzle,high speed photography and the phase Doppler particle analyzer（PDPA） were used. The test results showed that with the injection pressure increasing,the nozzle cavitation enhanced obviously. Compared with the conventional nozzle,the cavitation area,spray penetration and spray cone angle of group-hole are larger,the spray diffusion ability is better,the group-hole nozzle is more advantageous to the fuel atomization. With the distance of the hole increasing,the spray particle size decreases. Subsequently,it provides good reference for the design of the high performance of common rail injector.

关 键 词：组孔式喷油嘴 内流特性 喷雾特性 索特平均直径 相位多普勒粒子分析仪 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]